USA monitors measured a 6.3-magnitude "explosion" near the North's main testing site at Punggye-ri.
It claimed the device could be mounted on its newly developed intercontinental ballistic missiles, which experts have said are capable of reaching the United States mainland.
"We are starting National Security Council now to collect information and analyze this", said Japanese Prime Minister Shinzo Abe.
It came hours after Pyongyang said it had miniaturised a hydrogen bomb for use on a long-range missile, and North Korean leader Kim Jong-un was pictured with what state media said was a new type of hydrogen bomb.
In a statement Sunday, the ministry urged "immediate dialogue and negotiations".
Hydrogen bombs are many times more powerful than an atomic bomb.
Those readings would put the size of the explosion at several times larger than previous North Korean tests.
Malta vs England WC Qualifying UEFA Match Preview Marcus Rashford was introduced at half-time to replace Sterling whose early miss set the tone for his frustrating evening. Tom Heaton and Jack Butland played a half each in England's most recent game, June's friendly defeat by France.
The North followed its two tests of Hwasong-14 ICBMs by threatening in August to launch a salvo of its Hwasong-12 intermediate range missiles toward the US Pacific island territory of Guam.
In its report, KCNA (via Xinhua, China's official news agency) also said the North Korean leader "guided the work for nuclear weaponization on the spot", as part of "the final-stage research and development for perfecting the state nuclear force".
South Koreans watch a TV broadcast about North Korea's sixth nuclear test at Seoul Station on Sunday. North Korea wants to demonstrate it knows what makes a credible nuclear warhead.
What does the test tell us?
North Korea is thought to have a growing arsenal of nuclear bombs and has spent decades trying to ideal a multistage, long-range missile to eventually carry smaller versions of those bombs. -South Korea security alliance.
In the 12 days since Washington praised Pyongyang's "restraint" and held out the prospect of early talks, the North has fired three short-range missiles, sent another one soaring over Japan and detonated what appears to be a full-fledged thermonuclear device.
While Moon's approach to North Korea hardens, talk of bringing US' tactical nuclear weapons back into South Korea has reemerged, which has always been championed by the conservatives. The tremor is only 10km deep, the USGS said on Sunday.
"I sincerely hope that this will serve as the final wake-up call to the global community to outlaw all nuclear testing by bringing the CTBT into force", said Lassina Zerbo, head of the Comprehensive Test Ban Treaty Organisation.
An announcement from KCNA, Pyongyang's state news agency, said the H-bomb, created to be the payload of an ICBM, was "true to the Workers' Party of Korea's plan for building a strategic nuclear force". About 28,500 American troops are deployed in South Korea as deterrence against North Korea.
North Korea on Tuesday flew a potentially-nuclear capable intermediate range ballistic missile over northern Japan. Before Tuesday's launch, it appeared North Korea was backing away from its threat to fire missiles toward Guam.
President Donald Trump said on August 28 that "all options" were on the table in an implied threat of preemptive military action. The US, UK and other Western allies are prone to impose new heavy sanctions on Pyongyang even outside the UN Security Council.
Reports are that the Angels have dealt pitcher Grayson Long and a player to be named later to the Tigers for Upton and cash. The Angels ceded Maybin to the Houston Astros , an American League West rival that claimed him on revocable waivers.
Toshiba's huge troubles in its Westinghouse nuclear power business have apparently cost it a fair chunk of change. They say the two were struggling to come to an agreement over the USA company's future stake in the business.
It was an all-around bowling show by India as Jasprit Bumrah, Hardik Pandya and Kuldeep Yadav all snatched 2 wickets apiece. India continued their unbeaten run in Sri Lanka , beating the home side by 168 runs in the fourth ODI at Colombo .
However, as far as finding signs of hydrogen surrounding the TRAPPIST-1 worlds, the results on that were inconclusive. Now, an worldwide team of scientists believes those planets may harbor a considerable amount of water .
Capturing the scent of a pumpkin spice latte in a deodorant bottle is no easy feat, and it took Native at least 14 ingredients. The yearly debut of the Pumpkin Spice Latte is eagerly anticipated by many and is a hot item as the calendar turns to fall.
Irving's comments were his first since the trade. "I don't know what [the organization] is doing", Thomas told ESPN . Irving is exactly the type of player the Celtics need, a proven playoff performer and a victor .
Bell passed his team physical Friday left the facility a short time later, NFL Network's Aditi Kinkhabwala reported. But their longtime backfield centerpiece looks to be back a day after Pittsburgh's preseason concluded.
The following month, the Sony smart speaker will be available in Germany, France and the United Kingdom priced at €230 or £200. Panasonic has a smart speaker, the GA10 (below), a smart-looking aluminium Bluetooth speaker with a fabric mesh overlay.
Missing student's body found; suspect to be charged
Hours before the press conference, Burleigh's father, Ed Burleigh, announced the discovery of his daughter's body on Facebook . What started as a missing-person investigation turned into a homicide in this heartbreaking case, police said.
Republic of Ireland held by Georgia
Shane Duffy's first senior worldwide goal was enough only to claim a point as the Republic of Ireland rode their luck in Georgia . We were by no means at our best but if anything, it simplifies the job on Tuesday night - we need to win.
West Nile virus infections increase in Georgia
According to the health unit, West Nile virus is spread to humans through the bite of an infected mosquito. The best protection is to always wear an effective mosquito repellent while spending time outdoors.
Cloudy Start Wednesday, With Sunshine Moving In
Thursday is expected to be partly sunny with a high of 80 degrees, according to the National Weather Service . This Labor Day weekend will have the flawless weather for saying goodbye to the summer.
A look at Kenya's presidential candidates … again
On Friday, he said that the members of the election commission overseeing the vote should face criminal prosecution. In that judgement there are certain things they will give us about errors what happened during the last election.
The latest LG flagship V30 is definitely bigger and better
But LG has undertaken a transition to OLED for its flagships, and the one on the V30 is superb: bright, balanced, and responsive. This technology is said to deliver a customizable, clear and high-quality sound with the bundled headphones .
Alphabet. Inc's Nest Launches a cheapest thermostat
Former Nest CEO Tony Fadell left the company previous year and Ars Technica detailed other troubles at the time in the company. Nest Labs said Wednesday that it will sell a cheaper Internet-connected thermostat in a bid to get more customers.
Harlingen Humane Society Takes in Displaced Pets
RedRover , a nationwide non-profit organization has teamed up with Texas SPCA to care for the pets that were relocated to Dallas. But I imagine it will be tough, especially in the evenings, at least more me", Adams said.
Kenyan Muslims allowed day off for Eid al-Adha
While some simply greet each other " Eid Mubarak " on the day, some sacrifice cows, sheep, or goat to mark the celebration. On Eid al-Adha, Muslims dress up in new clothes and offer their prayers.
Novartis claims first CAR-T approval, setting $475k price tag
Novartis also considered the cost of bone-marrow transplants, which are now given to many leukemia patients whose cancer relapses. Kite Pharma, Juno Therapeutics, and Bluebird Bio are among a growing group of biotech companies working with CAR-T.
County clash abandoned after arrow fired
Oliver Florence, a reporter for our sister title Get Surrey , is at the scene and said he saw armed officers enter the venue. Cricket players were urged to leave the pitch after a crossbow bolt was sacked into the ground.
JJ Watt raises Houston fundraiser goal to $10 million
The Texans rerouted to Dallas after their game this weekend and will travel back to Houston when it's safe. So I wanted to do whatever we possibly could, and I knew that I wanted to get out in front of it quick.